I'm not sure who runs the "official_php" Twitter account, but its supposed to be THE account and is verified on Twitter (a relatively big deal as far as account status goes on Twitter).
In any case, I feel like its usually the last place where I see announcements made. For example, there's no tweet yet about the announcement/availability of the PHP 7.3.0 release. Its not a huge deal, really, but I follow a lot of PHP community members that have all tweeted about 7.3.0 and I'd like to point people to the official account for official announcements. Maybe, in the future, tweeting from that account can be made a part of coordinating an announcement? Just a thought. :) - Trevor Suarez https://trevorsuarez.com/